@Article{Understanding_Frame_Languages,
	author = "Tim Finin",
	title = "{Understanding Frame Languages}",
	month = "October",
	year = "1986",
	note = "This file has both parts one and two. The Lisp code for the PFL system is available on <a href="https://github.com/finin/pfl">GitHub</a>, though it will likely need editing to run in a modern Lisp system.",
	number = "3, 4",
	volume = "1",
	journal = "AI Expert",
	publisher = "CL Publications",
}